Chemical cartridge



J. W. VAN METER.

CHEMICAL CARTRIDGE.

APPLICATION FILED SEPT. 12, 1921.

1,430,772. Patented Oct. 3, 1922.

INVENTOR f/WEJ 144 Z A/Y Nmfi A TTORNE Y Patented Oct. 3, 1922. V

STATES JAMES W. VAN METER, OF SAN RAFAEL, CALIFORNIA.

' CHEMICAL CARTRIDGE.

Application filed September 12, 1921. Serial No. 499,932.

To all whom it may concern:

Be it known that I, JAMES W. VAn METER,

a citizen of the United States of America,

residing at San Rafael, in the county of Marin and State of California, have invented certain new and useful Improvements in Chemical Cartridges, of which the following is a specificatlon.

The present invention is an improved chemical cartridge and is an improvement on inventions described in applications filed by me in the United States Patent Oflice on June 9th, 1921, Serial No. 476,111, patented January 10, 1922, N 0. 1,403,461, and on August 31st, 1920, Serial No. 407,073, and on June 15,1920, Serial No. 389,509.

The primary object of the invention is to provide a cartridge for use in disseminating poisonous gases, which will contain in a minimum amount of space suiiicient ingredients for a large volume of gas.

In my co-pending applications referred to, I mentioned the use of creosote, linseed oil and other liquids which I used as ingredients of the cartridges. These liquids were introduced in the cartridge by saturation or adhesion in combination with sawdust, rice hulls or the like.

I find that, in some instances, it is desirable to use a volume of liquid greater than would. be practical, by such means, and in order to enclose in a cartridge a relatively large percentage of liquid without the bulk which would be required by the saturation or adhesion methods, I now provide a fluidtight container for the liquid and pack or embed the container, filled with liquid, in a quantity of rice hulls. As will be later expl'ained, I treat the rice hulls with a metallic dust, which is acted upon by liquid chlorine introduced to the cartridge. The intense heat created by the reaction of thechlorine on the metallic elements, expands the liquid within the container and forces the closure out of the container against. the yielding pressure of the packed rice hulls.

As this action takes place only when heat is created, the sudden discharge of liquid from the container causes a great volume of gas to emanate from the cartridge, and I find the method decidedly advantageous in tree fumigation where-in I discharge vapors from creosote or other-cresylic acid compounds in the container.

Another object of the invention is to so constructa chemical cartridge that damp or fluid ingredients may be included without danger of deterioration or 10% by evaporation and which will be liberated only when required, by the introduction of chlorine.

In the accompanying one sheet of drawingrs ig. 1 is a longitudinal section of my improved cartridge, showing a socket for releasably engaging the cartridge.

Fig. 2 is an elevation of the discharge end of my cartridge and partly broken away.

Fig. 3 is a similar view of the intake end of the cartridge.

Referring to the drawings, Fig. 1, the numeral 1 indicates a cylindrical shell of paper, closed at both ends by caps 2 and 3 to form a cartridge. These caps are preferably made of paper. The ends of the cylinder 1 are overlaid by paper discs 5 held on by the caps 2 and 3. The disc 5 at the intakeend of the cartridge is provided with an aperture 4, in the center, to admit chlorine under pressure from a tube 6 connected with a socket 7 adapted to releasably engage one end of the cartridge. The other disc 5 is provided with a plurality of apertures 8 to form discharge outlets.

To prevent the loss of ingredients within the cartridge through the apertures 4 and 8, I provide the caps on each end adapted to cover said apertures. These caps are partly cutaway to uncover the apertures 4 and 8 from the ends of the cartridge before discharging.

As I depend on the action of chlorine on a metallic substance for discharging my cartridges, I introduce the required metallic element in the form of a dust such as zinc, iron or lead in powdered form attached to rice hulls, sawdust or like combustible, moisture containing material 11 by a suitable adhesive element. Embedded in the hulls 11 I show a liquid container '12 provided with a closure 13.

. I prefer to use a glass container, but have used metallic tubes with good results. When chlorine is admitted to the cartridge through tube 6, the reaction upon the zinc dust 10 creates an instantaneous high heat which expands the liquid 14 in the container 12, and either causes the container to be dis- ,rupted or its closure 13 to be expelled and hence releases the liquid which rapidly vaporizes and leaves the cartridge through apertures 8, serving as a poisonous gas or as a vehicle for such gases as may be formed- I rations additional, elements enclosed inpressure to be introduced therein, and'means t0 1permit the discharge of gas therefrom, 153, c a

finghavin'g means to permit chlorine under malterial.

the cartridge. 'As examples of this; salts of" cyanide, arsenic, sulphur, and other elentents included my copendl'ng appl1ca tions'before mentloned. Obvi'ously,- water might be used to advantage inthe container 1' '12 where cyanide salts are'u'sed in the cartridge, and any liquid may be liberated as described. i v a 10 Hclaim: '1. A chemical cartridge'comprisi'nga cas ing having means to permit chlorine'cunder rge of metallic particles, such as iron,

jzinc or lead and. a smoke yielding materiah in said casing, and a container charged with gas forming fluid, embedded insaidcharge of metallic '2; A chemical cartridge comprising a Gas 'zinc, or lead, "such as sawdust, rice hullsforithe}like coi1- particles smoke yielding pressure tdbe mama mama seas,

therefrom, "a s h;=.- r and a smoke yielding mater al to permit the discharge of charge of metallic 'p'articl taining. moisture; in said -a con taine'r charged with gas form" fluid, embedded. in said charge of meta fc particles tainer charged with gas producing'material embedded insaid charge ofmetallic particles and smoke yielding material.

In testimony whereof l'aflix my signature.

JAMES W. VAN.METER. 

